Nouns denoting natural phenomena
- turbulent flow
- flow in which the velocity at any point varies erratically
- AC
- an electric current that reverses direction sinusoidally
- thermionic current
- an electric current produced between two electrodes as a result of electrons emitted by thermionic emission
- interference fringe
- one of the light or dark bands produced by the interference and diffraction of light
- equinoctial storm
- a violent rainstorm near the time of an equinox
- skin effect
- the tendency of high-frequency alternating current to distribute near the surface of a conductor
- whiteout
- an arctic atmospheric condition with clouds over snow produce a uniform whiteness and objects are difficult to see; occurs when the light reflected off the snow equals the light coming through the clouds
- El Nino southern oscillation
- a more intense El Nino that occurs every few years when the welling up of cold nutrient-rich water does not occur; kills plankton and fish and affects weather patterns
- harmattan
- a dusty wind from the Sahara that blows toward the western coast of Africa during the winter
- sound spectrum
- the distribution of energy as a function of frequency for a particular sound source
- impulsion
- a force that moves something along
- moment of a couple
- given two equal and opposite forces, the product of the force and the distance between them
- wave
- a persistent and widespread unusual weather condition (especially of unusual temperatures)
- cloud
- any collection of particles (e.g., smoke or dust) or gases that is visible
- resonance
- an excited state of a stable particle causing a sharp maximum in the probability of absorption of electromagnetic radiation
- virtual image
- a reflected optical image (as seen in a plane mirror)
- tramontana
- a cold dry wind that blows south out of the mountains into Italy and the western Mediterranean
- scorcher
- an extremely hot day
- self-induction
- generation of an electromotive force (EMF) in a circuit by changing the current in that circuit; usually measured in henries
- arterial pressure
- the pressure of the circulating blood on the arteries